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Basic Chemistry Practice Test: Chemical Equilibrium
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Avg score: 74% Most missed: “Le Chatelier's principle states that if a system at equilibrium is disturbed, th…”
Chemical equilibrium is a state in which the concentrations of reactants and products in a chemical reaction do not change over time. This state is also known as dynamic equilibrium.  Here are some characteristics of chemical equilibrium: Forward and backward reactions: In a reversible reaction, the forward and backward reactions occur at the same speed. Constancy: At equilibrium, certain properties like concentration, density, pressure, and color remain constant. Fixed concentrations: At equilibrium, each reactant and product has a fixed concentration. Equilibrium constant: The ratio of... Show more
Basic Chemistry Practice Test: Chemical Equilibrium
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1 Questions

1. The value of Keq for the equilibrium H2 (g) + I2 (g) 2 HI (g) is 794 at 25 °C. What is the value of Keq for the equilibriumbelow?
1/2 H2 (g) + 1/2 I2 (g) HI (g)